3rd Gen 2.7 Petrol extreme guzzle - NEED HELP

[Megatron]

Lately, my surf delivers a meager 8mpg. I changed the ignition lead set about a year ago and had it serviced twice in the last 6 months, changed spark plugs, new air, and petrol filter, and had the throttle body cleaned (had a lot of carbon build-up). However, its drinking is unbearable quite frankly. There are no engine warning lights, the engine runs quite smoothly with reduced torque though. There is a little white smoke at the cold start but clears with time. I've noticed that the exhaust fumes smell of a little petrol and the pipe has more soot than usual.
I have very limited mechanical/electrical knowledge.

It's such a good runner but its fuel consumption is likely to force me to set it on fire.

Any advice will do me much help.

[3rdgensurf]

I would have thought oxygen sensor if it smells like petrol but usally that would cause an engine warning light. How long has it been fuel guzzling for???

[3rdgensurf]

i've seen other people on other forums that have same problem and they say possibly vacuum leak

[Megatron]

[QUOTE=3rdgensurf;n1297338]I would have thought oxygen sensor if it smells like petrol but usally that would cause an engine warning light. How long has it been fuel guzzling for???[/QUOTE]

It’s been guzzling for just over a year.

[3rdgensurf]

Sounds like some sensor has messed up and is injecting to much fuel. Also could be the MAF sensor (mass air flow)
hope this helps